Re: red safe light

----- Original Message -----
From: "Yves Gauvreau" <gauvreau-yves@sympatico.ca>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Thursday, November 10, 2005 4:15 PM
Subject: Re: red safe light

> I think the key is to have a tungsten light bulb which gives out very
little
> if any UV. The color does not matter, some clear (or almost clear)
material
> will block UV. Think of flash tubes for example.

You might be better off chosing some high-power LED (LUMILEDs etc. are
available up to 5W now). They're already pretty narrow bandwidth "by
nature" - hence very little light is wasted by additional filtering.

Martin
Received on Fri Nov 11 02:51:29 2005